Resilient middle sole or insole



Nov. 23, 1943. M. MARGoLiN 2,334,719

RESILIENT MIDDLE SOLE OR INSOLE K Filed Nov. 22, '1940 ATTORNEYS s `:agrarie Patented Nov. 23, 1.94,?,v

nnsnlinnrfminnnn SOLE oitl'ivsonljiY i r MyerlMargolin, Elgin, 111. .Application fNovember ZZ, 1940,",Serial No. 366,573

2 claims. @corres-3) 4 My invention relates to a novel middle soleforv insole designed to produce increased footcomfort and forced breathing Within the shoe. My invention -more particularly-relates, to a middle sole or insole having grooveshand projections on' bothrsides ythereof so. that increased forcedbreathing Veffects. are vobtained .by theflexingqof the grooves described. My invention further. relates toianovel middle Asole or insole'in'the'fori. y corrugated" resilient sheet] having]J perforatioiis therethrough, in the middle, of thew curvesio'f 'said corrugations, which middlesolev is adapted tobe positioned between e an outsoleand an' inner sole.

V"The advantages ofy increasedfoot com fortihave 'long rbeen' recognized. Itf'has-been particularly desirable to `increase the air circulation'within the shoe -and to increasetlie springiness and -flexibility ofthe walking'surf'ace" ofthe shoe. 'Y

Y andtheoppositely sole are perforations I3;V InWalking the com-` ailordingfcommunication between.' the vgrooves QU disposed portion of the middle pressioniof the projectionsJrZ` byv the weight of` the foot .or vthe pressure of thel outsoleinwturn causes the compression y,of the grooves fl l` forcing air therefrom into theinterior Aportionof thefshoe. By reasonof the multiplicity of projections. vI 2 and grooves l l .a welldispersed forced breathing electv is obtained Within the shoe. 'It will be noted that the grooves'and projections'arein staggered relationone `.to the vother and a Well balanced.'resil-v ience is yafforded lby this construction. `It is withA ,inlthepurview of my ir'ivention, however, to provide grooves on one side only and projectionson .theopposite side l When the projections l2 faceupwardly kthey come in Acontact eitherwith an in- 1 have now conceived ofra novel construction i i by means of :which such increased resilience and flexibility and forced breathing leffects `are obtained.r j l ``It is the objectof my invention Ltopi'ovide a novel middle sole fo'rmedxsoas to cause forced` breathing and to provideincre'ased resilience-and flexibility forv theV foot. f

It isa further object? of `my invention 'togprof vide'anovel middle sole lor insoleconsisting of a Y resilient material having grooves and raised'porz tions contained Yori-'both sides thereof, to cause.

forced breathing effects when pressure is exerted thereon. Y

It is a further object of my invention to provide a novel middle` sole or insole in the form of corrugated resilient sheet material having perorations therethrough,

Further objects of my-invention Will heapparent from a consideration of therdrawing and description thereof which here follows:

Figure 1 is a bottom vieW `of the middle sole of my invention.

Figure 2 is a plan View showing the reverse side of the upper portion of themiddle sole shown in Figure 1.

Figure 3 is a cross section along theline 3-3 of Figure 1. f I Figure 4 is a cross section along the line 4-4 of Figure 1.

Figurer is of Figure 1.

Figure 6 is a modied form of my a cross section along the line 5-5 invention.

Referring now more particularly to the drawing, in Figure 1 vI show a middle sole I0 in which are disposed grooves l I and raised projectionslor bars l2. Passing through the middle sole I0 and y vshouldbe .perforated or o fsuch construction so Isolefor witha suitable cover member so that there is no'discomfort to the foot by reason of their shape. Y. f, l I intend to include Within the scope of-my in',- vention ynot only the spaced projections and grooves as'shown inFigur'esl and 2 vbut'thepro` jections and ,gro'ovesmay be Vcontinuous 5Vacross the Width of the 'middle sole. Furthertheprojections may be' in 'any'des'ired form suitable for obtaining the best breathing 'and resilient effects. Althoughv Ifprefer that `the grooves "i3 havey a substantially rectangular 'cross section they-.may be of other vshapesand 'the grooves may beiclosed at both ends,l as for example groove I5, or the grooves may be open at thev end or ends.v

It is further Within the purview of my invention to provide that the construction shown in Figures`l, 2 and 5 and described above be employed in an insole in Which case a lap is provided around the peripheral edge of. I0, which lap may be attached to a cut outl insole as described in my Patent No. y2,153,021 and 2,207,632I and my i rco-pending applications Serial No. 257,351, Serial e member I0 which in turn compresses and decom.

presses the grooves I l and the compression of the projections I2 increases this compressing and decompressing leffect and therefore increases thev forced breathing effects.

When the construction above described isused as a middle sole then the lsuperimposed insole that it permits-the passageof air from the grooves into the interior of the shoe. When the projec` tion and groove construction described is -employed'in the form of aninsole then the vcover of the insole should be air permeable to permit the passage of air therethrough.

because the novel construction of my invention is adapted to support the heavy weight involved.

In the case of mens shoes the middle layer is employed with the grooves and projections from heel to toe. When used in mens shoes the thickness of the middle'sole is uniform, While in womens shoes the center portion is thicker and the y-edges are thinner and taper to a iine edge to obor closed'cell ftype. vAlthough I have shovvn v perforations as located Yin the grooves, it is also Y Within the purview of my invention to locate the perforations outside the grooves in'which case the perforations extend through the. middle sole orV insole adjacent to the grooves'and projections to' permit the passage of air therethrough;

tain the rounded bottom shoe effect.

This insert or ller having a thicker central portion and thinner and tapering edge portion may be employed in a shoe madefor example by the'Sbicca process in which the insole is split off from the outsole. When there is a raised por- By shaping the projections as shown withal ,t

rounded extremity, I get anincreased resilient ,i

effect because there is increased give to the projection. As the projection is compressed by the pressure of the foot and the' outsole, `air isV also compressed Within the passage cir-perforation I3 andth groovell.V 1 y @L .In t e modified form of Vmy invention shown in Figure VI provide a middle 'sole 20 inthe form v Vof a corrugated sheet of resilientniaterial such as `gas expanded rubber; 'hermiddle s'ole 2D engages an insolezl atthe upper portion 22 of the middle sole and themiddle sole 2 0v engages the outtion or hump onV the outsole the insert or iiller may rbe' ldished or hollowed out to iit over this raised portion or hump.

` Itis understood that the middle sole construction described herein can be employed either as amiddle sole or as an insole and when employed as an insole can be used per se or in the form of solev 23 at the'lower 'portion `24 of the vmiddle f sole 20.

like or corrugated middle sole2ll is compressed between theinsole 2i and the outsole 23,'and the sole 2l. Perforations 26 and A3ilprcvide for the freel passage fof air resulting 'from the Vcompres- V40 to the interior of.y the shoe above the insole, 2l`.

ysion ofthe `middle sole" from the middle s ole 26 The middle solel 23 is o ftheproper resilienceand is suitably corrugated s o that the pockets 2,1 and 28 are of such size to provide the optimum forced breathing effects and the middle sole 20 has fsuiiicient resittance to provide resiliencefor thefoot. Y. f fThe naw constructionY aboveset `forthYV fo;` a middle sole or insole is particularly valuable in mens shoes because V`of the welt construction and the proper spring-like Perforations 26 Vareprovided inthe middle sole 20. In` walking the resilienty Wave? an'insert in afcutout insole as described in my patents and applications above set forth.

I claim; Y l v1. Aresilient insole having a ball portion, a toe portion and a shank portion,` the toe portion and thejshank-portion" having the samethickness,

` thejballv portion having projections in the form offbarsjextending above thev upper plane of said insole and projections in the form of bars extending below Ytheflower `plane Vof said insole, and

v grooves havingspaced lateral wallsgsaid grooves beingjuxtapositioned' with respect to the bars on Y 357 bo'thsides of said insole, and perforations exs air inthe pockets Hand 2G is compressed and forced through the` perforations 30 in .the'innev tending .through said-ball portion to afford vventilation between both sides ofrsaid ball portion.

2, A resilient-insole having a ball portion, a toe -portionand ashank portion, the toe portion Vand the shank portion having the samethickness,

- Vthe ball -portion havingsprojections in the form yofrovvs ofbars'spaced laterally Vextending above the'upper plane of said insole and projections'in the form of rows of bars spaced laterally extendingbelow the lower plane of said insole and grooves having spaced lateral walls, said grooves being juxtapositioned withrespect to the bars on both sides of said insole, and perforations extendingthroughsaidball portion to aiord ventilation between'both sides of saidball portion.

MEYER, MARGOLIN.A 

